We will be filibustering. We will be trying to stop it. We are not going to let them run over us. And we are going to demand amendments and we are going to make sure the American people know that some of us at least are opposed to unlawful searches.

The Hill noted that Sen. Ron Wyden, D-Ore., would also filibuster a short-term extension of some of the Patriot Act provisions.

If passed, the extension would give Congress more time to sort out differences beyond the June 1 deadline to renew the law. Those critical of the Patriot Act assert the law gives too many surveillance powers to the government.

Paul launched his presidential campaign last month, and this move could give him more exposure in what is quickly becoming a crowded field on the Republican side. Six candidates including Paul have announced their candidacy for president on the GOP side:

Sen Ted Cruz, R-Texas

Paul

Sen Marco Rubio, R-Fla.

Former Gov. Mike Huckabee, R-Ark.

Former Hewlett-Packard CEO Carly Fiorina

Retired pediatric neurosurgeon Ben Carson.

In March 2013, Paul filibustered for nearly 13 hours with several of his Senate colleagues against what they described as the danger of drone strikes to U.S. citizens on American soil, Politico noted at the time.

The filibuster delayed a vote on President Obama’s nominee to lead the Central Intelligence Agency, John Brennan, who was ultimately confirmed.